[1] Columbia Univ, Dept Dermatol, New York, NY 10027 USA
[2] Hadassah Hebrew Univ Med Ctr, Dept Dermatol, Jerusalem, Israel
[3] Columbia Univ, Dept Epidemiol, New York, NY 10027 USA
[4] Univ Appl Hlth Sci, Dept Clin Med, Zagreb, Croatia
[5] Univ Maribor, Dept Dermatol, SLO-2000 Maribor, Slovenia
[6] Columbia Univ, Dept Genet & Dev, New York, NY 10027 USA